In-vehicle interface design for passengers experience optimization of Level 4 autonomous vehicles

This research focuses on the design of the in-vehicle interactive interface of L4 autonomous driving vehicles, aiming to explore how to improve the passengers experience by optimizing the interface interaction mode. With the development of autonomous driving technology, the shortcomings of existing interface design in transparent feedback, emotional adaptation and multi-modal interaction support have become the main obstacles affecting user trust and satisfaction. Based on user research and prototype design, the study proposed an interface design scheme that combines transparent feedback with emotional perception, focusing on real-time display of vehicle behaviour logic and dynamic adaptation to passenger emotional state. In user testing, the system showed some improvements in trust enhancement and ease of use, especially in response to complex road conditions and emergencies. Although this research has provided some preliminary results through innovative design, there are still limitations in technical implementation and scope of application. Future research will focus on sample diversification and accuracy improvement of emotional perception technology to further improve the design scheme and expand its application scenarios.